<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRoleVisible = true">添加角色</el-button>
        </el-col>
      </el-row>
      <el-table :data="rolelist" border stripe>
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbottom', i1 === 0 ? 'bdtop': '', 'vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
              <el-col :span="5">
                <el-tag closable @close="removeRightByID(scope.row,item1.id)">{{ item1.authName }}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <el-col :span="19">
                <el-row :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
                  <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightByID(scope.row,item2.id)">{{ item2.authName }}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag closable type="warning" v-for="(item3) in item2.children" :key="item3.id" @close="removeRightByID(scope.row,item3.id)">
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName" width="200px"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="editRole(scope.row.id)">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="delRole(scope.row.id)">删除</el-button>
            <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <el-dialog
      title="添加角色"
      :visible.sync="addRoleVisible"
      width="50%">
      <el-form ref="addRoleRef" :model="addRoleForm" label-width="80px">
        <el-form-item label="角色名称">
          <el-input v-model="addRoleForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述">
          <el-input v-model="addRoleForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button @click="addRoleVisible = false">取 消</el-button>
        <el-button type="primary" @click="submitAddRoleForm">确 定</el-button>
      </span>
    </el-dialog>
    <el-dialog
      title="编辑角色"
      :visible.sync="editRoleVisible"
      width="50%">
      <el-form ref="editFormRef" :model="editForm" label-width="80px">
          <el-form-item label="角色名称">
            <el-input v-model="editForm.roleName"></el-input>
          </el-form-item>
          <el-form-item label="角色描述">
            <el-input v-model="editForm.roleDesc"></el-input>
          </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button @click="editRoleVisible = false">取 消</el-button>
        <el-button type="primary" @click="submitEditInfo()">确 定</el-button>
      </span>
    </el-dialog>
    <el-dialog
      title="分配权限"
      :visible.sync="setRightVisible"
      width="50%"
      @close="defCheckKeys = []">
      <el-tree :data="rightsList" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defCheckKeys" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  data () {
    return {
      rolelist: [],
      addRoleVisible: false,
      addRoleForm: {
        roleName: '测试角色3',
        roleDesc: '这是测试角色3'
      },
      editRoleVisible: false,
      editForm: {
        id: 0,
        roleName: '',
        roleDesc: ''
      },
      setRightVisible: false,
      rightsList: [],
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      defCheckKeys: [],
      roleID: ''
    }
  },
  created () {
    this.getRolesList()
  },
  methods: {
    async getRolesList () {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败')
      this.rolelist = res.data
    },
    async submitAddRoleForm () {
      const { data: res } = await this.$http.post('roles', this.addRoleForm)
      if (res.meta.status !== 201) return this.$message.error('添加角色失败')
      this.$message.success('添加角色成功')
      this.addRoleVisible = false
      this.getRolesList()
    },
    async editRole (id) {
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200) return this.$message.error('获取角色信息失败')
      this.editForm.id = id
      this.editForm.roleName = res.data.roleName
      this.editForm.roleDesc = res.data.roleDesc
      this.editRoleVisible = true
    },
    submitEditInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return this.$message.error('修改角色信息失败')
        const { data: res } = await this.$http.put('roles/' + this.editForm.id, { roleName: this.editForm.roleName, roleDesc: this.editForm.roleDesc })
        if (res.meta.status !== 200) return this.$message.error('修改角色信息失败')
        this.editRoleVisible = false
        this.getRolesList()
        this.$message.success('修改角色信息成功')
      })

      this.editRoleVisible = false
    },
    async delRole (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消')
      }
      const { data: res } = await this.$http.delete('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      this.getRolesList()
    },
    async removeRightByID (role, rightID) {
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消')
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightID}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      role.children = res.data
    },
    async showSetRightDialog (role) {
      this.roleID = role.id
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) return this.$message.error('获取权限列表失败')
      this.getLeaveKeys(role, this.defCheckKeys)
      this.rightsList = res.data
      this.setRightVisible = true
    },
    getLeaveKeys (node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getLeaveKeys(item, arr)
      })
    },
    async allotRights () {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(), ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleID}/rights`, { rids: idStr })
      if (res.meta.status !== 200) return this.$message.error('分配权限失败')
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.setRightVisible = false
    }
  }
}
</script>

<style>
.el-tag{
  margin: 7px;
}
.bdtop{
  border-top: 1px solid #eee;
}
.bdbottom{
  border-bottom: 1px solid #eee;
}
.vcenter{
  display: flex;
  align-items: center;
}
</style>
